UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues:
Total revenues	$ 16,437	$ 33,293
Operating expenses:
Cost of products	3,266	6,592
Research and development expenses	7,329	9,951
Selling, general and administrative expenses	10,446	24,487
Intangible asset amortization	201	1,767
Changes in fair value of related party contingent consideration	2,134	2,968
Restructuring costs	1,228	153
Total operating expenses	24,604	45,918
Operating loss	(8,167)	(12,625)
Investment and other income, net	817	54
Interest expense	(3,062)	(1,597)
Loss on deconsolidation of subsidiary	(2,673)	0
Other income - changes in fair value of related party payable	(307)	(395)
Loss before income taxes	(13,392)	(14,563)
Income tax benefit	(374)	(2,327)
Net loss	$ (13,018)	$ (12,236)
Net income (loss) per share - basic (in dollars per share)	$ (0.35)	$ (0.32)
Net income (loss) per share - diluted (in dollars per share)	$ (0.35)	$ (0.32)
Weighted average number of shares outstanding - basic (in shares)	37,354	38,559
Weighted average number of shares outstanding - diluted (in shares)	37,354	38,559
Product sales
Revenues:
Total revenues	$ 16,437	$ 33,161
License revenue
Revenues:
Total revenues	$ 0	$ 132